Generation and Study of Antibodies Against Two Triangular Trimers Derived from Aβ

Overview

Journal Pept Sci (Hoboken)

Date 2024 Apr 22

PMID 38644932

Authors

Adam G Kreutzer

Ryan J Malonis

Chelsea Marie T Parrocha

Karen Tong

Gretchen Guaglianone

Jennifer T Nguyen

Michelle N Diab

Jonathan R Lai

James S Nowick

Affiliations

Soon will be listed here.

Abstract

Monoclonal antibodies (mAbs) that target the P-amyloid peptide (Aβ) are important Alzheimer's disease research tools and are now being used as Alzheimer's disease therapies. Conformation-specific mAbs that target oligomeric and fibrillar Aβ assemblies are of particular interest, as these assemblies are associated with Alzheimer's disease pathogenesis and progression. This paper reports the generation of rabbit mAbs against two different triangular trimers derived from Aβ. These antibodies are the first mAbs generated against Aβ oligomer mimics in which the high-resolution structures of the oligomers are known. We describe the isolation of the mAbs using single B-cell sorting of peripheral blood mononuclear cells (PBMCs) from immunized rabbits, the selectivity of the mAbs for the triangular trimers, the immunoreactivity of the mAbs with aggregated Aβ, and the immunoreactivity of the mAbs in brain tissue from the 5xFAD Alzheimer's disease mouse model. The characterization of these mAbs against structurally defined trimers derived from Aβ enhances understanding of antibody-amyloid recognition and may benefit the development of diagnostics and immunotherapies in Alzheimer's disease.

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